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Redo timing in DMAWrite/DMARead

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This commit is contained in:
TotalNerd 2014-07-13 12:00:13 -05:00
parent 8a0093de23
commit f602372885
6 changed files with 71 additions and 84 deletions
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23
Source/Core/Core/HW/EXI_Channel.cpp
View File

@ -31,7 +31,7 @@ CEXIChannel::CEXIChannel(u32 ChannelId) :
m_Status.CHIP_SELECT = 1;
for (auto& device : m_pDevices)
device.reset(EXIDevice_Create(EXIDEVICE_NONE, m_ChannelId));
device.reset(EXIDevice_Create(EXIDEVICE_NONE, this));
updateInterrupts = CoreTiming::RegisterEvent("EXIInterrupt", UpdateInterrupts);
}
@ -123,7 +123,6 @@ void CEXIChannel::RegisterMMIO(MMIO::Mapping* mmio, u32 base)
case EXI_READWRITE: pDevice->ImmReadWrite(m_ImmData, m_Control.TLEN + 1); break;
default: _dbg_assert_msg_(EXPANSIONINTERFACE,0,"EXI Imm: Unknown transfer type %i", m_Control.RW);
}
m_Control.TSTART = 0;
}
else
{
@ -134,14 +133,12 @@ void CEXIChannel::RegisterMMIO(MMIO::Mapping* mmio, u32 base)
case EXI_WRITE: pDevice->DMAWrite(m_DMAMemoryAddress, m_DMALength); break;
default: _dbg_assert_msg_(EXPANSIONINTERFACE,0,"EXI DMA: Unknown transfer type %i", m_Control.RW);
}
m_Control.TSTART = 0;
}
if (!m_Control.TSTART) // completed !
{
m_Status.TCINT = 1;
CoreTiming::ScheduleEvent_Threadsafe_Immediate(updateInterrupts, 0);
}
m_Control.TSTART = 0;
if (pDevice->m_deviceType != EXIDEVICE_MEMORYCARD)
SendTransferComplete();
}
})
);
@ -152,6 +149,12 @@ void CEXIChannel::RegisterMMIO(MMIO::Mapping* mmio, u32 base)
);
}
void CEXIChannel::SendTransferComplete()
{
m_Status.TCINT = 1;
CoreTiming::ScheduleEvent_Threadsafe_Immediate(updateInterrupts, 0);
}
void CEXIChannel::RemoveDevices()
{
for (auto& device : m_pDevices)
@ -160,7 +163,7 @@ void CEXIChannel::RemoveDevices()
void CEXIChannel::AddDevice(const TEXIDevices device_type, const int device_num)
{
IEXIDevice* pNewDevice = EXIDevice_Create(device_type, m_ChannelId);
IEXIDevice* pNewDevice = EXIDevice_Create(device_type, this);
AddDevice(pNewDevice, device_num);
}
@ -232,7 +235,7 @@ void CEXIChannel::DoState(PointerWrap &p)
IEXIDevice* pDevice = m_pDevices[d].get();
TEXIDevices type = pDevice->m_deviceType;
p.Do(type);
IEXIDevice* pSaveDevice = (type == pDevice->m_deviceType) ? pDevice : EXIDevice_Create(type, m_ChannelId);
IEXIDevice* pSaveDevice = (type == pDevice->m_deviceType) ? pDevice : EXIDevice_Create(type, this);
pSaveDevice->DoState(p);
if (pSaveDevice != pDevice)
{

8
Source/Core/Core/HW/EXI_Channel.h
View File

@ -80,9 +80,6 @@ private:
std::unique_ptr<IEXIDevice> m_pDevices[NUM_DEVICES];
// Since channels operate a bit differently from each other
u32 m_ChannelId;
int updateInterrupts;
static void UpdateInterrupts(u64 userdata, int cyclesLate);
@ -96,6 +93,8 @@ public:
void RegisterMMIO(MMIO::Mapping* mmio, u32 base);
void SendTransferComplete();
void AddDevice(const TEXIDevices device_type, const int device_num);
void AddDevice(IEXIDevice* pDevice, const int device_num, bool notifyPresenceChanged=true);
@ -108,4 +107,7 @@ public:
// This should only be used to transition interrupts from SP1 to Channel 2
void SetEXIINT(bool exiint) { m_Status.EXIINT = !!exiint; }
// Since channels operate a bit differently from each other
u32 m_ChannelId;
};

10
Source/Core/Core/HW/EXI_Device.cpp
View File

@ -5,6 +5,7 @@
#include "Core/ConfigManager.h"
#include "Core/Core.h"
#include "Core/HW/EXI_Channel.h"
#include "Core/HW/EXI_Device.h"
#include "Core/HW/EXI_DeviceAD16.h"
#include "Core/HW/EXI_DeviceAMBaseboard.h"
@ -88,7 +89,7 @@ public:
// F A C T O R Y
IEXIDevice* EXIDevice_Create(TEXIDevices device_type, const int channel_num)
IEXIDevice* EXIDevice_Create(TEXIDevices device_type, CEXIChannel* channel)
{
IEXIDevice* result = nullptr;
@ -102,7 +103,8 @@ IEXIDevice* EXIDevice_Create(TEXIDevices device_type, const int channel_num)
case EXIDEVICE_MEMORYCARDFOLDER:
{
bool gci_folder = (device_type == EXIDEVICE_MEMORYCARDFOLDER);
result = new CEXIMemoryCard(channel_num, gci_folder);
device_type = EXIDEVICE_MEMORYCARD;
result = new CEXIMemoryCard(channel->m_ChannelId, gci_folder);
break;
}
case EXIDEVICE_MASKROM:
@ -114,7 +116,7 @@ IEXIDevice* EXIDevice_Create(TEXIDevices device_type, const int channel_num)
break;
case EXIDEVICE_MIC:
result = new CEXIMic(channel_num);
result = new CEXIMic(channel->m_ChannelId);
break;
case EXIDEVICE_ETH:
@ -138,5 +140,7 @@ IEXIDevice* EXIDevice_Create(TEXIDevices device_type, const int channel_num)
if (result != nullptr)
result->m_deviceType = device_type;
result->m_channel = channel;
return result;
}

7
Source/Core/Core/HW/EXI_Device.h
View File

@ -7,6 +7,8 @@
#include "Common/ChunkFile.h"
#include "Common/CommonTypes.h"
class CEXIChannel;
enum TEXIDevices
{
EXIDEVICE_DUMMY,
@ -48,9 +50,12 @@ public:
virtual bool IsInterruptSet() {return false;}
virtual ~IEXIDevice() {}
// Pointer to channel attached to the device
CEXIChannel* m_channel;
// for savestates. storing it here seemed cleaner than requiring each implementation to report its type.
// I know this class is set up like an interface, but no code requires it to be strictly such.
TEXIDevices m_deviceType;
};
IEXIDevice* EXIDevice_Create(const TEXIDevices device_type, const int channel_num);
IEXIDevice* EXIDevice_Create(const TEXIDevices device_type, CEXIChannel* channel);

84
Source/Core/Core/HW/EXI_DeviceMemoryCard.cpp
View File

@ -11,6 +11,7 @@
#include "Core/CoreTiming.h"
#include "Core/Movie.h"
#include "Core/HW/EXI.h"
#include "Core/HW/EXI_Channel.h"
#include "Core/HW/EXI_Device.h"
#include "Core/HW/EXI_DeviceMemoryCard.h"
#include "Core/HW/GCMemcard.h"
@ -29,11 +30,8 @@
#define MC_STATUS_READY 0x01
#define SIZE_TO_Mb (1024 * 8 * 16)
// These are rough estimates based on GameCube video evidence of memory card "speeds"
// This will need to be refined, and perhaps the idea behind the speed thing is wrong
// But it works with (near?) perfect speed as far as saving goes
static const float MC_TRANSFER_RATE_WRITE = 22.0f * 1024.0f;
static const float MC_TRANSFER_RATE_READ = 73.84f * 1024.0f;
static const u32 MC_TRANSFER_RATE_READ = 512 * 1024;
static const u32 MC_TRANSFER_RATE_WRITE = (u32)(96.125f * 1024.0f);
void CEXIMemoryCard::FlushCallback(u64 userdata, int cyclesLate)
{
@ -56,6 +54,16 @@ void CEXIMemoryCard::CmdDoneCallback(u64 userdata, int cyclesLate)
pThis->CmdDone();
}
void CEXIMemoryCard::TransferCompleteCallback(u64 userdata, int cyclesLate)
{
int card_index = (int)userdata;
CEXIMemoryCard* pThis = (CEXIMemoryCard*)ExpansionInterface::FindDevice(EXIDEVICE_MEMORYCARD, card_index);
if (pThis == nullptr)
pThis = (CEXIMemoryCard*)ExpansionInterface::FindDevice(EXIDEVICE_MEMORYCARDFOLDER, card_index);
if (pThis)
pThis->TransferComplete();
}
CEXIMemoryCard::CEXIMemoryCard(const int index, bool gciFolder)
: card_index(index)
, m_bDirty(false)
@ -63,6 +71,7 @@ CEXIMemoryCard::CEXIMemoryCard(const int index, bool gciFolder)
// we're potentially leaking events here, since there's no UnregisterEvent until emu shutdown, but I guess it's inconsequential
et_this_card = CoreTiming::RegisterEvent((index == 0) ? "memcardFlushA" : "memcardFlushB", FlushCallback);
et_cmd_done = CoreTiming::RegisterEvent((index == 0) ? "memcardDoneA" : "memcardDoneB", CmdDoneCallback);
et_transfer_complete = CoreTiming::RegisterEvent((index == 0) ? "memcardTransferCompleteB" : "memcardTransferCompleteB", TransferCompleteCallback);
interruptSwitch = 0;
m_bInterruptSet = 0;
@ -206,6 +215,17 @@ void CEXIMemoryCard::CmdDone()
m_bDirty = true;
}
void CEXIMemoryCard::TransferComplete()
{
// Transfer complete, send interrupt
m_channel->SendTransferComplete();
// Page written to memory card, not just to buffer - let's schedule a flush 0.5b cycles into the future (1 sec)
// But first we unschedule already scheduled flushes - no point in flushing once per page for a large write.
CoreTiming::RemoveEvent(et_this_card);
CoreTiming::ScheduleEvent(500000000, et_this_card, (u64)card_index);
}
void CEXIMemoryCard::CmdDoneLater(u64 cycles)
{
CoreTiming::RemoveEvent(et_cmd_done);
@ -234,9 +254,6 @@ void CEXIMemoryCard::SetCS(int cs)
//???
if (address >= MC_DATA_FILES)
CmdDoneLater(BLOCK_SIZE * (SystemTimers::GetTicksPerSecond() / MC_TRANSFER_RATE_WRITE));
else
CmdDoneLater(5000);
}
break;
@ -244,37 +261,19 @@ void CEXIMemoryCard::SetCS(int cs)
case cmdChipErase:
if (m_uPosition > 2)
{
// Clear only the system blocks
for (int i = 0; i < 5; i++)
memorycard->ClearBlock(BLOCK_SIZE * i);
// TODO: Investigate on HW, I (LPFaint99) believe that this only erases the system area (Blocks 0-4)
memorycard->ClearAll();
status &= ~MC_STATUS_BUSY;
m_bDirty = true;
if (address >= MC_DATA_FILES)
CmdDoneLater((BLOCK_SIZE * 5) * (SystemTimers::GetTicksPerSecond() / MC_TRANSFER_RATE_WRITE));
else
CmdDoneLater(5000);
}
break;
case cmdReadArray:
if (m_uPosition > 8)
{
// Each read is 512 bytes
if (address >= MC_DATA_FILES)
CmdDoneLater(512 * (SystemTimers::GetTicksPerSecond() / MC_TRANSFER_RATE_READ));
else
CmdDoneLater(5000);
}
break;
case cmdPageProgram:
if (m_uPosition > 4)
if (m_uPosition >= 5)
{
int count = m_uPosition - 5;
int i=0;
status &= ~MC_STATUS_BUSY;
status &= ~0x80;
while (count--)
{
@ -283,10 +282,6 @@ void CEXIMemoryCard::SetCS(int cs)
address = (address & ~0x1FF) | ((address+1) & 0x1FF);
}
// Each write is 128 bytes
if (address >= MC_DATA_FILES)
CmdDoneLater(128 * (SystemTimers::GetTicksPerSecond() / MC_TRANSFER_RATE_WRITE));
else
CmdDoneLater(5000);
}
break;
@ -505,10 +500,7 @@ IEXIDevice* CEXIMemoryCard::FindDevice(TEXIDevices device_type, int customIndex)
void CEXIMemoryCard::DMARead(u32 _uAddr, u32 _uSize)
{
memorycard->Read(address, _uSize, Memory::GetPointer(_uAddr));
#ifdef _DEBUG
if ((address + _uSize) % BLOCK_SIZE == 0)
INFO_LOG(EXPANSIONINTERFACE, "reading from block: %x", address / BLOCK_SIZE);
#endif
CoreTiming::ScheduleEvent(_uSize * (SystemTimers::GetTicksPerSecond() / MC_TRANSFER_RATE_READ), et_transfer_complete, (u64)card_index);
}
// DMA write are preceded by all of the necessary setup via IMMWrite
@ -516,19 +508,5 @@ void CEXIMemoryCard::DMARead(u32 _uAddr, u32 _uSize)
void CEXIMemoryCard::DMAWrite(u32 _uAddr, u32 _uSize)
{
memorycard->Write(address, _uSize, Memory::GetPointer(_uAddr));
// At the end of writing to a block flush to disk
// memory card blocks are always(?) written as a whole,
// but the dma calls are by page size (0x200) at a time
// just in case this is the last block that the game will be writing for a while
if (((address + _uSize) % BLOCK_SIZE) == 0)
{
INFO_LOG(EXPANSIONINTERFACE, "writing to block: %x", address / BLOCK_SIZE);
// Page written to memory card, not just to buffer - let's schedule a flush 0.5b cycles into the future (1 sec)
// But first we unschedule already scheduled flushes - no point in flushing once per page for a large write
// Scheduling event is mainly for raw memory cards as the flush the whole 16MB to disk
// Flushing the gci folder is free in comparison
CoreTiming::RemoveEvent(et_this_card);
CoreTiming::ScheduleEvent(500000000, et_this_card, (u64)card_index);
}
CoreTiming::ScheduleEvent(_uSize * (SystemTimers::GetTicksPerSecond() / MC_TRANSFER_RATE_WRITE), et_transfer_complete, (u64)card_index);
}

19
Source/Core/Core/HW/EXI_DeviceMemoryCard.h
View File

@ -30,26 +30,21 @@ private:
// Scheduled when a command that required delayed end signaling is done.
static void CmdDoneCallback(u64 userdata, int cyclesLate);
// Scheduled when memory card is done transferring data
static void TransferCompleteCallback(u64 userdata, int cyclesLate);
// Flushes the memory card contents to disk.
void Flush(bool exiting = false);
// Signals that the command that was previously executed is now done.
void CmdDone();
// Signals that the transfer that was previously executed is now done.
void TransferComplete();
// Variant of CmdDone which schedules an event later in the future to complete the command.
void CmdDoneLater(u64 cycles);
// Memory card data layout
enum
{
MC_DATA_HEADER = 0x0000,
MC_DATA_DIRECTORY = 0x2000,
MC_DATA_DIRECTORYBACKUP = 0x4000,
MC_DATA_BLOCKALLOCMAP = 0x6000,
MC_DATA_BLOCKALLOCMAPBACKUP = 0x8000,
MC_DATA_FILES = 0xA000,
};
enum
{
cmdNintendoID = 0x00,
@ -70,7 +65,7 @@ private:
};
int card_index;
int et_this_card, et_cmd_done;
int et_this_card, et_cmd_done, et_transfer_complete;
//! memory card state
// STATE_TO_SAVE